215 lines
5.9 KiB
C
215 lines
5.9 KiB
C
/*
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* Copyright (c) 2004-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/config.h>
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#include <linux/compat.h>
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#include <linux/init.h>
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#include <linux/ioctl.h>
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#include <linux/syscalls.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <asm/uaccess.h>
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#include "xfs.h"
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#include "xfs_types.h"
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#include "xfs_fs.h"
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#include "xfs_vfs.h"
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#include "xfs_vnode.h"
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#include "xfs_dfrag.h"
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#define _NATIVE_IOC(cmd, type) \
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_IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
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#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
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#define BROKEN_X86_ALIGNMENT
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/* on ia32 l_start is on a 32-bit boundary */
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typedef struct xfs_flock64_32 {
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__s16 l_type;
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__s16 l_whence;
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__s64 l_start __attribute__((packed));
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/* len == 0 means until end of file */
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__s64 l_len __attribute__((packed));
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__s32 l_sysid;
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__u32 l_pid;
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__s32 l_pad[4]; /* reserve area */
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} xfs_flock64_32_t;
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#define XFS_IOC_ALLOCSP_32 _IOW ('X', 10, struct xfs_flock64_32)
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#define XFS_IOC_FREESP_32 _IOW ('X', 11, struct xfs_flock64_32)
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#define XFS_IOC_ALLOCSP64_32 _IOW ('X', 36, struct xfs_flock64_32)
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#define XFS_IOC_FREESP64_32 _IOW ('X', 37, struct xfs_flock64_32)
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#define XFS_IOC_RESVSP_32 _IOW ('X', 40, struct xfs_flock64_32)
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#define XFS_IOC_UNRESVSP_32 _IOW ('X', 41, struct xfs_flock64_32)
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#define XFS_IOC_RESVSP64_32 _IOW ('X', 42, struct xfs_flock64_32)
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#define XFS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct xfs_flock64_32)
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/* just account for different alignment */
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STATIC unsigned long
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xfs_ioctl32_flock(
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unsigned long arg)
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{
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xfs_flock64_32_t __user *p32 = (void __user *)arg;
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xfs_flock64_t __user *p = compat_alloc_user_space(sizeof(*p));
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if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) ||
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copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) ||
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copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) ||
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copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) ||
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copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) ||
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copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) ||
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copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
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return -EFAULT;
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return (unsigned long)p;
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}
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#else
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typedef struct xfs_fsop_bulkreq32 {
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compat_uptr_t lastip; /* last inode # pointer */
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__s32 icount; /* count of entries in buffer */
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compat_uptr_t ubuffer; /* user buffer for inode desc. */
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__s32 ocount; /* output count pointer */
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} xfs_fsop_bulkreq32_t;
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STATIC unsigned long
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xfs_ioctl32_bulkstat(
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unsigned long arg)
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{
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xfs_fsop_bulkreq32_t __user *p32 = (void __user *)arg;
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xfs_fsop_bulkreq_t __user *p = compat_alloc_user_space(sizeof(*p));
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u32 addr;
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if (get_user(addr, &p32->lastip) ||
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put_user(compat_ptr(addr), &p->lastip) ||
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copy_in_user(&p->icount, &p32->icount, sizeof(s32)) ||
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get_user(addr, &p32->ubuffer) ||
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put_user(compat_ptr(addr), &p->ubuffer) ||
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get_user(addr, &p32->ocount) ||
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put_user(compat_ptr(addr), &p->ocount))
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return -EFAULT;
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return (unsigned long)p;
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}
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#endif
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STATIC long
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__linvfs_compat_ioctl(int mode, struct file *f, unsigned cmd, unsigned long arg)
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{
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int error;
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struct inode *inode = f->f_dentry->d_inode;
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vnode_t *vp = LINVFS_GET_VP(inode);
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switch (cmd) {
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case XFS_IOC_DIOINFO:
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case XFS_IOC_FSGEOMETRY_V1:
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case XFS_IOC_FSGEOMETRY:
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case XFS_IOC_GETVERSION:
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case XFS_IOC_GETXFLAGS:
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case XFS_IOC_SETXFLAGS:
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case XFS_IOC_FSGETXATTR:
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case XFS_IOC_FSSETXATTR:
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case XFS_IOC_FSGETXATTRA:
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case XFS_IOC_FSSETDM:
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case XFS_IOC_GETBMAP:
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case XFS_IOC_GETBMAPA:
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case XFS_IOC_GETBMAPX:
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/* not handled
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case XFS_IOC_FD_TO_HANDLE:
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case XFS_IOC_PATH_TO_HANDLE:
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case XFS_IOC_PATH_TO_FSHANDLE:
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case XFS_IOC_OPEN_BY_HANDLE:
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case XFS_IOC_FSSETDM_BY_HANDLE:
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case XFS_IOC_READLINK_BY_HANDLE:
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case XFS_IOC_ATTRLIST_BY_HANDLE:
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case XFS_IOC_ATTRMULTI_BY_HANDLE:
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*/
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case XFS_IOC_FSCOUNTS:
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case XFS_IOC_SET_RESBLKS:
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case XFS_IOC_GET_RESBLKS:
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case XFS_IOC_FSGROWFSDATA:
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case XFS_IOC_FSGROWFSLOG:
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case XFS_IOC_FSGROWFSRT:
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case XFS_IOC_FREEZE:
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case XFS_IOC_THAW:
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case XFS_IOC_GOINGDOWN:
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case XFS_IOC_ERROR_INJECTION:
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case XFS_IOC_ERROR_CLEARALL:
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break;
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#ifdef BROKEN_X86_ALIGNMENT
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/* xfs_flock_t has wrong u32 vs u64 alignment */
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case XFS_IOC_ALLOCSP_32:
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case XFS_IOC_FREESP_32:
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case XFS_IOC_ALLOCSP64_32:
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case XFS_IOC_FREESP64_32:
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case XFS_IOC_RESVSP_32:
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case XFS_IOC_UNRESVSP_32:
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case XFS_IOC_RESVSP64_32:
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case XFS_IOC_UNRESVSP64_32:
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arg = xfs_ioctl32_flock(arg);
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cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
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break;
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#else /* These are handled fine if no alignment issues */
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case XFS_IOC_ALLOCSP:
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case XFS_IOC_FREESP:
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case XFS_IOC_RESVSP:
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case XFS_IOC_UNRESVSP:
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case XFS_IOC_ALLOCSP64:
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case XFS_IOC_FREESP64:
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case XFS_IOC_RESVSP64:
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case XFS_IOC_UNRESVSP64:
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break;
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/* xfs_bstat_t still has wrong u32 vs u64 alignment */
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case XFS_IOC_SWAPEXT:
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break;
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case XFS_IOC_FSBULKSTAT_SINGLE:
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case XFS_IOC_FSBULKSTAT:
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case XFS_IOC_FSINUMBERS:
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arg = xfs_ioctl32_bulkstat(arg);
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break;
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#endif
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default:
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return -ENOIOCTLCMD;
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}
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VOP_IOCTL(vp, inode, f, mode, cmd, (void __user *)arg, error);
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VMODIFY(vp);
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return error;
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}
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long
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linvfs_compat_ioctl(
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struct file *f,
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unsigned cmd,
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unsigned long arg)
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{
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return __linvfs_compat_ioctl(0, f, cmd, arg);
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}
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long
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linvfs_compat_invis_ioctl(
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struct file *f,
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unsigned cmd,
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unsigned long arg)
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{
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return __linvfs_compat_ioctl(IO_INVIS, f, cmd, arg);
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}
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